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Applied investigation on waste minimization in an integrated steel site
RISE, Swerea, MEFOS.
RISE, Swerea, MEFOS.
RISE, Swerea, MEFOS.
SSAB, Sweden.
2016 (English)In: 2015 World Congress on Sustainable Technologies, WCST 2015, Institute of Electrical and Electronics Engineers Inc. , 2016, p. 21-26Conference paper, Published paper (Refereed)
Abstract [en]

Recycling is of major interest in steel making for environmental reasons as well as economical. All process units produce secondary materials which are recycled, sold or put in landfill. This work evaluates simulated cases for recycling of materials at an integrated steel site. Case studies and industrial tests of different recycling options have been performed. The main focus has been on residues produced in significant quantities and materials put in landfill due to their physical or chemical nature. Chosen case studies have been tested in industrial scale and comprise of recycling of dust, sludge and ladle slag to the blast furnace. The results from test periods have been used to compare modelling with process parameters. Industrial tests show that it will be beneficial to recycle steel plant (BOF) sludge via briquettes to the blast furnace but the main issue is the drying of the sludge. Furthermore ladle slag can be used as slag former in the BF with no negative effect on the process or product. The main advantage is that the resource efficiency increases since less virgin material is used and the depositing of secondary materials is decreased. Major cost savings can be found if internal recirculation can replace raw material such as iron ore, coke and lime stone.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc. , 2016. p. 21-26
Keywords [en]
process integration, steel plant, waste minimization, waste recycling
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-42148DOI: 10.1109/WCST.2015.7414850Scopus ID: 2-s2.0-84969812415ISBN: 9781908320544 (print)OAI: oai:DiVA.org:ri-42148DiVA, id: diva2:1384400
Conference
World Congress on Sustainable Technologies, WCST 2015, 14 December 2015 through 16 December 2015
Available from: 2020-01-09 Created: 2020-01-09 Last updated: 2020-01-09Bibliographically approved

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CiteExportLink to record
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